21708960

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1$

素因数の和:116

約数の個数: 288

約数和(自身を含む): 86873472

約数和(自身を除く): 65164512

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 32, 35, 39, 40, 42, 48, 49, 52, 56, 60, 65, 70, 71, 78, 80, 84, 91, 96, 98, 104, 105, 112, 120, 130, 140, 142, 147, 156, 160, 168, 182, 195, 196, 208, 210, 213, 224, 240, 245, 260, 273, 280, 284, 294, 312, 336, 355, 364, 390, 392, 416, 420, 426, 455, 480, 490, 497, 520, 546, 560, 568, 588, 624, 637, 672, 710, 728, 735, 780, 784, 840, 852, 910, 923, 980, 994, 1040, 1065, 1092, 1120, 1136, 1176, 1248, 1274, 1365, 1420, 1456, 1470, 1491, 1560, 1568, 1680, 1704, 1820, 1846, 1911, 1960, 1988, 2080, 2130, 2184, 2272, 2352, 2485, 2548, 2730, 2769, 2840, 2912, 2940, 2982, 3120, 3185, 3360, 3408, 3479, 3640, 3692, 3822, 3920, 3976, 4260, 4368, 4615, 4704, 4970, 5096, 5460, 5538, 5680, 5880, 5964, 6240, 6370, 6461, 6816, 6958, 7280, 7384, 7455, 7644, 7840, 7952, 8520, 8736, 9230, 9555, 9940, 10192, 10437, 10920, 11076, 11360, 11760, 11928, 12740, 12922, 13845, 13916, 14560, 14768, 14910, 15288, 15904, 17040, 17395, 18460, 19110, 19383, 19880, 20384, 20874, 21840, 22152, 23520, 23856, 25480, 25844, 27690, 27832, 29536, 29820, 30576, 32305, 34080, 34790, 36920, 38220, 38766, 39760, 41748, 43680, 44304, 45227, 47712, 50960, 51688, 52185, 55380, 55664, 59640, 61152, 64610, 69580, 73840, 76440, 77532, 79520, 83496, 88608, 90454, 96915, 101920, 103376, 104370, 110760, 111328, 119280, 129220, 135681, 139160, 147680, 152880, 155064, 166992, 180908, 193830, 206752, 208740, 221520, 226135, 238560, 258440, 271362, 278320, 305760, 310128, 333984, 361816, 387660, 417480, 443040, 452270, 516880, 542724, 556640, 620256, 678405, 723632, 775320, 834960, 904540, 1033760, 1085448, 1356810, 1447264, 1550640, 1669920, 1809080, 2170896, 2713620, 3101280, 3618160, 4341792, 5427240, 7236320, 10854480, 21708960]

約数ペア:

[(1, 21708960), (2, 10854480), (3, 7236320), (4, 5427240), (5, 4341792), (6, 3618160), (7, 3101280), (8, 2713620), (10, 2170896), (12, 1809080), (13, 1669920), (14, 1550640), (15, 1447264), (16, 1356810), (20, 1085448), (21, 1033760), (24, 904540), (26, 834960), (28, 775320), (30, 723632), (32, 678405), (35, 620256), (39, 556640), (40, 542724), (42, 516880), (48, 452270), (49, 443040), (52, 417480), (56, 387660), (60, 361816), (65, 333984), (70, 310128), (71, 305760), (78, 278320), (80, 271362), (84, 258440), (91, 238560), (96, 226135), (98, 221520), (104, 208740), (105, 206752), (112, 193830), (120, 180908), (130, 166992), (140, 155064), (142, 152880), (147, 147680), (156, 139160), (160, 135681), (168, 129220), (182, 119280), (195, 111328), (196, 110760), (208, 104370), (210, 103376), (213, 101920), (224, 96915), (240, 90454), (245, 88608), (260, 83496), (273, 79520), (280, 77532), (284, 76440), (294, 73840), (312, 69580), (336, 64610), (355, 61152), (364, 59640), (390, 55664), (392, 55380), (416, 52185), (420, 51688), (426, 50960), (455, 47712), (480, 45227), (490, 44304), (497, 43680), (520, 41748), (546, 39760), (560, 38766), (568, 38220), (588, 36920), (624, 34790), (637, 34080), (672, 32305), (710, 30576), (728, 29820), (735, 29536), (780, 27832), (784, 27690), (840, 25844), (852, 25480), (910, 23856), (923, 23520), (980, 22152), (994, 21840), (1040, 20874), (1065, 20384), (1092, 19880), (1120, 19383), (1136, 19110), (1176, 18460), (1248, 17395), (1274, 17040), (1365, 15904), (1420, 15288), (1456, 14910), (1470, 14768), (1491, 14560), (1560, 13916), (1568, 13845), (1680, 12922), (1704, 12740), (1820, 11928), (1846, 11760), (1911, 11360), (1960, 11076), (1988, 10920), (2080, 10437), (2130, 10192), (2184, 9940), (2272, 9555), (2352, 9230), (2485, 8736), (2548, 8520), (2730, 7952), (2769, 7840), (2840, 7644), (2912, 7455), (2940, 7384), (2982, 7280), (3120, 6958), (3185, 6816), (3360, 6461), (3408, 6370), (3479, 6240), (3640, 5964), (3692, 5880), (3822, 5680), (3920, 5538), (3976, 5460), (4260, 5096), (4368, 4970), (4615, 4704)]